Toán Lớp 5: Tính bằng cách thuận tiện
A= ½+¼+⅛+1/16+1/32+1/64+1/128+1/256
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Toán Lớp 5: Tính bằng cách thuận tiện
A= ½+¼+⅛+1/16+1/32+1/64+1/128+1/256
Comments ( 2 )
A=128/256+64/256+32/256+16/256+8/256+4/256+2/256+1/256
A=(128+64+32+16+8+4+2+1)/256
A=255/256